Self-heating can.



No 818.092. PATENTED APR. 17, 1906.

G. 3. JEWETT.

SELF HEATING OAN.

APPLICATION FILED JUNE 19, 1905.

S 1 we "m M alifcmnw kip. B

'in use.

GEORGE SI DNEY JEWETT, OF. NORRlDGEWOCK, MAlNE.

Specification of Letters Patent.

Patented. a rn i'r, 19cc,

Application filed June 19,1905. Serial No. 266.666.

To all whom it may concern: I

Be it known that I, GEORGE SIDNEY JEW- ETT, a citizen of the UnitedStates, residing at Norridgewock, in the county of Somerset and State ofMaine, have invented certain new and useful Im rovements in Self-HeatingCans; and I do ereby declare the following to be a full, clear, andexact description of the invention,.such as will enable others skilledin the art to which it appertains to make and use the same, referencebeing had to the accompanying drawings,-and to the let ters ofreferencemarked thereon, which form a part of this specification.

This invention relates to certain new and useful improvements inself-heatin cans for canned goods and it more specifica ly relates toimprovements in that type of self-heating cans containing canned foodswhich are required before serving upon the table to be warmed orpartially cooked, the can being adapted to heat or cook the contents bythe action of contained within a compartment ad' acent to or surroundingthe compartment containin the food.

The invention has for its object to improve upon the constructions shownand described in Patents Nos. 720,434 and 720,435, granted to meFebruary 10, 1903, whereby the can will be rendered more eflicient andserviceable To this end and to such others as the in- Y vention maypertain the invention resides in the peculiar details of construction ofthe can, which will be hereinafter more full" described, shown in theaccom an 'ngrawings, and then specifically de ne in the appended claim.6 The invention is clearly illustrated in the accompanying drawings,which, with the let the can. Fig. 3 is a top plan view of thereceptacle.

Reference now being had to the details of the drawings by letter, Adesignates the outer can,,which is made of tin or other sheet metaladapted to the purpose, the said outer can being of, considerablygreater size, both as to height and diameter, than the size of theordinary or standard cans which are emplriyed in packing canned foods,such as fruit an vegetables.

B -is a fruit or vegetable canof the stand- I ard form and size anddiffering only from the cans commonly upon the market 1n that its headend, which is provided with the capcovered filling-aperture C, isprovided at its periphery with a slightly upward and outward extendingflange portion D for a purpose which will presently appear.

The bottom end of the outer can a is provided with a central circularopening E,the diameter of which opening is slightly less than thediameter ofthe can B, and the eriphery of this central opening E isprovi ed with an inwardly-beveled flange e,the angle of inclination ofthe said flange e correspond ing with the angle of the flange D upon thehead end of the fruit-can B.

F is a shallow water pan or tray, which is constructed ofsuitablediameter as to permit it to be closely fitted in the upper end of theouter can A. The upper edge of the said an or tray is bent at rightangles to the vertical sides of the tray, thus forming a horizontalflange G, which extends slightly beyond the outer face of the body ofthe can and serves as a seat forthe cover-plate H, which cover-- plateis designed to be secured to the face of said peripheral flange, as willbe understood.

The cover plate H is provided near its outer edge with a circumferentialdepression or groove H", and within this circumferential groove orsurrounded thereby provided, in the face of the plate, a depression I toreceive a puncturing-tool J, which is designed to be retained in thedepression when not designed for use by a label pasted over the'end ofthe can.

In assembling the parts of the can and paring the same for use the fruitor vegetable can B is inverted and placed within the can A, and whenproperly placed the flange periphery D of the head of the can B will engage the flange e, surrounding the opening in the bottom of the outercan A, the engagement of these flanged surfaces serving to hold. the canB securely against lateral displace ment, as will be readily understood.After the can B has been thus placed in position within the outer canthe space surrounding the inner can is filled with unslaked lime or itsequivalent material, and the water-trayF,

having first been filled with water, is seated within the upper end ofthe outer can, the depth of the said tray being such that when it isseated it will bear'clirectly upon the can Bb'eneath it and will serveto hold the said can securely in place. The top plate H of the can'A isthen placed in position and ceme'nted or otherwlse suitably secured atits outer edge to the flanged upper edge of the Water-tray.

When it is designed to cook or heat the contents of the can, thepuncturing-tool J is removed from its seat by removing the labelcovering it, and with this tool an opening or several openings, ifreferred, may be made Within the groove 1-19, the said openingsextending through the cover-plate H and also through-the bottom of thewater-tray, thus permitting the water contained in thetra to enter thespace surrounding the can B W ere it comes into contact with the lime orits puncturing of the bottom of th Water-tray shall be at pointsdirectly aboye the space u containing the lime and prevents theliability of puncturing the can B.

Having thus described my invention,.what I claim to be new, and desireto secure by Letters Patent, is- A self-heating can, comprising an cuteand inner receptacle With a space intervening between the same, theouter receptacle having a bottom. with an annular groove in the uppersurface thereof in which the inner receptacle fits, the ortion of thebottom of the outer reccptac e beyond said annular groove being inclinedand bent to form an annular groove, adapted to receive thecircumferential wall of the outer casing, a water-tank resting upon thetop of said inner receptacle, a flanged top to said water-tank, havingan annular groove therein, forming a shoulder and designed to hold saidwatertank'against the inner wall and flange of the outer receptacle, asshown and described. In testimonywhereof I hereunto aiiix my signaturein the presence of two witnesses. GEORGE SIDNEY JEWETT.

Witnesses:

Fonnnsr GooDwIN,

M. L. BOWMAN.

